1. Your full name from your Google+ profile will replace your username on YouTube.

2. Your channel title and photo will change.

The YouTube username can still be used to log in and the channel URL will stay the same.

Google's goal is to use the same identity on YouTube, Google+ and other Google services so that it can provide an unified experience. For example, other people that know you will find your YouTube videos much more easily if you're using your full name and your photo. YouTube's commmenting system can also improve if people use their real identity.

Obviously, not everyone will want to drop their username, especially if they like/need anonymity or their username is very popular. That's probably the reason why this feature is optional.

A Google spokesperson told LA Times that "YouTube will let people change their usernames back if they decide to start using their full name. (...) New users can still set their YouTube name however they want. The prompt comes up only for users who have a Google+ profile."

"You'll see this option when you upload or comment on YouTube (...). For partners, brands, and organizations, you won't see this just yet. In the coming months we'll be working on new options to give you even more control over your presence on YouTube," informs Google.

I haven't noticed this before, so I'm not sure if it's a result of integration with Google+ or not, but my Youtube channel now shows my age in addition to my full name, even though it's hidden on my Google+ profile...

Same for me Mr Anonymous... I also don't have the option... but today I use Firefox on Android (nightly version) and when I went to the advance options, the dialog come up... Because this is a floating dialog, I couldn't make the process.

typo: "For example, other people that know you will find your YouTube videos much easier if you're using your full name and your photo." should be "For example, other people that know you will find your YouTube videos more easily if you're using your full name and your photo." Also, pet peeve: "...other people that..." is becoming accepted usage instead of the more friendly: "...other people who..."

I went from Google+ to youtube (without username) so I made a username for easing url searching and being able to sign in. But now I can't switch back to full name. How do I do this? Fix it Google. Info on it.

I went from Google+ (on my Gmail account) to make a new Youtube profile. So I didn't have a username. I made a username (so I could sign into Youtube easier) and now I can't switch back to full name. How do I do this? (I'm not on that account I'm on my other Google Account)